00:01
Okay, so i have a right triangle problem, and i've drawn it here on my whiteboard.
00:09
So the first question is to find the length of the side adjacent to the given angle.
00:16
So the adjacent side is the side forming this angle that's not the hypotenuse.
00:25
So it's the side in blue.
00:27
So i'm going to call that one a.
00:30
And then the next part of the problem, i'm asked to find the hypotenuse.
00:36
So the hypotenuse is the longest side.
00:38
It's the side opposite the right angle.
00:41
I'm going to call that h.
00:43
I just want to label them.
00:44
So you know what we're talking about.
00:48
So let's go to the problem.
00:49
I want to find the length of the adjacent side.
00:52
And what i've got is an angle and the opposite side.
00:57
So opposite and adjacent, that must mean i'm going to be using the tangent function.
01:04
So the tangent of 75 degrees equals the side opposite over the side adjacent.
01:14
I'm going to multiply both sides by a, right? and i get that.
01:24
And then i'm going to divide both sides by 1075.
01:27
So i get 150 divided by tangent of 75.
01:33
I'm going to grab my calculator and i want to make sure that my calculator is in degree mode.
01:40
So check your mode...